Polychaeta |
Sabellida |
Siboglinidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; djupintervall 2000 - 2200 m (Ref. 80977). Subtropical
Eastern Central Atlantic: Carlos Ribeiro mud volcano.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm
More than 30 free tentacles packed in a regular arrangement at their base, with pinnules. Pale and thin bridle keels. Small cephalic lobe with an irregular tip. Two rows of plaqueless metameric papillae separated by a furrow. Two girdles lying on well-developed ridges, with the two halves of both girdles being separated dorsally by a relatively large group of papillae. The tube is soft and ringed; semi-transparent at the anterior end, brown with darker rings in the middle and white/greyish in the posterior end.
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae
Members of the class Polychaeta are mostly gonochoric (sexual). Mating: Females produce a pheromone attracting and signalling the males to shed sperm which in turn stimulates females to shed eggs, this behavior is known as swarming. Gametes are spawned through the metanephridia or body wall rupturing (termed as "epitoky", wherein a pelagic, reproductive individual, "epitoke", is formed from a benthic, nonreproductive individual, "atoke"). After fertilization, most eggs become planktonic; although some are retained in the worm tubes or burrowed in jelly masses attached to the tubes (egg brooders). Life Cycle: Eggs develop into trocophore larva, which later metamorph into juvenile stage (body lengthened), and later develop into adults.
Hilário, A. and M.R. Cunha 2008 On some frenulate species (Annelida: Polychaeta: Siboglinidae) from mud volcanoes in the Gulf of Cadiz (NE Atlantic). Scientia Marina 72(2):361-371. (Ref. 80977)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Verktyg
Ytterligare information
Trophic EcologyFood items (preys)
Födosammansättning
Födointag
Predatorer
Population dynamicsTillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundans
PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
